Sorry to hear about your troubles longrifle. I'd be mad too if I knew he shot it on my land and there is no easy answer here. Wouldn't it be nice if you were both on the same page and worked together as you say?? Now that you have that surveying done, putting up a new fence would work but it also might make things worse. If he gets in your face about it just remind him that this all would have been avoided if he had only offered to work with you and also remind him of the work that you've put into your land. Or you could go have a heart to heart with him again and state what you intend to do (Putting up new fence) and give him one more chance to become a decent neighbor.